With the release of Portage 1.9.3, it would be nice if there was a webpage on gentoo.org with changes/updates/fixes/whatever to portage. Same goes for gentoolkit (or any other gentoo specific packages).

I discovered that (some) docs for all packages can be found under /usr/doc/<package>. This includes changes to portage! It would still be nice to have an easier method of changes/updates in new packages...perhaps kemerge could have an option displaying changes instead of the ebuild script.